1NKX

CRYSTAL STRUCTURE OF A PROTEOLYTICALLY GENERATED FUNCTIONAL MONOFERRIC C-LOBE OF BOVINE LACTOFERRIN AT 1.9A RESOLUTION

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1BLF	PDB ENTRY 1BLF

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	298	0.1M MES, 25% POLYETHYLENE GLYCOL MONOMETHYL ETHER 550 AND 0.01 M ZINC SULPHATE, pH 6.5, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.64	53.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.359	α = 90
b = 50.471	β = 107.72
c = 65.934	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	283	IMAGE PLATE	MARRESEARCH	mirrors	2002-07-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.9	20	97	0.057	0.057	17.5	6		29084	-3	-3	25.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	2	84		0.23	0.23	3.6	4	2482

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1BLF	1.9	20	28205	28205	1382	96.8	0.202	0.202	0.192	0.222	RANDOM	34.4

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
3.92		-5.09	-1.85		-2.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	22.4
r_scangle_it	3.67
r_mcangle_it	2.43
r_scbond_it	2.3
r_mcbond_it	1.48
r_angle_refined_deg	1.3
r_improper_angle_d	0.76
r_bond_refined_d	0.005
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_chiral_restr
r_gen_planes_refined
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2593
Nucleic Acid Atoms
Solvent Atoms	226
Heterogen Atoms	132

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing